I need to achieve the following:
Two 2D quads appear as though they are stacked one on top of the other (like two halves of the same texture) but are in fact seperated on the z axis by n coordinates. So that if a 3D object passes between them one half appears in front of the object and the other behind.
Could i achieve this by applying orthogonal projection to the two quads and then normal perspective to the rest of the 3d data? Will this lose depth data?
I hope my example isn't too misleading!